Lakizo, T. A.

Morozova, Yana Pavlovna

Electronic archive of Tomsk Polytechnic University

Том 2 XXIV Международная конференция «Химия и химическая технология в XXI веке»288It follows from the obtained data that the in-crease the mass fraction of the matrix material in the WOC leads to an increase in specific energy con-sumption. It is also shown that an increase in the mass fraction of air leads to the production of urani-um oxide U3O8 instead of uranium dioxide.It is most expedient to use a matrix based on magnesium oxide, due to the highest value of the thermal conductivity coefficient, melting tempera-ture and other performance characteristics.The results obtained can be used to create a technology for the plasma-chemical synthesis of FOC DNF for high-temperature gas-cooled reactors for hydrogen production.References1.  Alekseev S. V., Zaitsev V. A., Tolstoukhov S. S. Dispersive  nuclear  fuel.  –  M.:  Technosphere, 2015. – 248 p. 2.  Alekseev S. V., Zaitsev V. A. Thorium in nuclear power. – M.: Technosfera, 2014. – 288 p. 3.  Tumanov  Yu.  N.  Plasma  and  high-frequency processes for obtaining and processing materi-als in the nuclear fuel cycle: present and future. – M.: Fizmatlit, 2003. – 759 p. THE CONCENTRATION OF THE DEPRESSOR ADDITIVE FOR DIESEL FUELS AS A FACTOR OF ITS EFFECTIVENESST. A. Lakizo, Y. P. MorozovaResearch supervisor – candidate of engineering sciences, associate professor M. V. KirginaLanguage supervisor – assistant teacher I. A. BogdanovNational Research Tomsk Polytechnic University Tomsk, Russia, Lenina Avenue, 30, tal6@tpu.ruThe pour point (PP) of diesel fuel (DF) is the temperature at which diesel fuel loses its mobility when a standard test tube is tilted by 45° for one minute. By adding depressant additives (Add) to diesel fuel, it is possible to achieve a decrease in PP.The aim of the work is to identify trends of the Add concentration effects on the PP of the DF sam-ple.Blends of the straight-run DF and three differ-ent additives using concentrations of 0.5, 0.7, 1.0, 1.5, and 2.0 c.u. (where 1.0 c.u. is the manufactur-er's suggested concentration) were prepared during the research. Further, following to the method pre-sented in [1], the PP of straight-run DF samples and prepared blends was determined. The obtained re-sults are presented in Table.Table shows that with an increase in the con-centration of Add No. 1 PP of blends decreases and reaches its minimum at a concentration of 1.5 c.u., further increase in the concentration of Add No. 1 is not advisable, PP remain stable. The temperature depression was 40 °C relative to the original sample and 1 °C relative to the sample with the concentra-tion recommended by the manufacturer. In this case the concentration recommended by the manufactur-er is optimal.Fig. 1.  The influence of temperature on the equilibrium composition of the main products of plasma processing of the AONS solution based on acetone (α = 0.5) at a mass fraction of air of 68 % (a) and 70 % (b)ba Секция 7.  Химия и химическая технология на иностранном языке (английский)289The best result is observed when using Add No. 2 at a concentration of 1.5 c.u. (this concentration is optimal). In this case, the temperature depression was 37 °C relative to the original sample and 7 °C relative to the sample with the Add concentration recommended by the manufacturer.With an increase in the concentration of Add No. 3 PP of the blends decreases and hits a low in the studied range at a concentration of 2.0 c.u. The temperature depression was 31 °C relative to the original sample and 4 °C relative to the sample with a concentration recommended by the manufacturer, and 1 °C relative to the sample with a concentration of 1.5 c.u., so the concentration is 1.5 c.u. is optimal.The use of all Adds made it possible to signifi-cantly reduce PP of DF. For a blend of Add No. 1, the optimal concentration is 1.0 c.u., for blends of Add No. 2 and No. 3 – 1.5 c.u. The best result was caused by the addition of Add No. 1.References1.  USS (State Standard System) 20287-91. Petro-leum  products. Methods  of  test  for  flow  point and pour point. Published 01.01.1992. – Mos-cow: Standartinform, 2006. – 9 p.REGULARITIES OF FEEDSTOCK CONSUMPTION INFLUENCE ON THE DEPTH OF STABLE GAS CONDENSATE PROCESSING ON ZEOLITE CATALYSTD. M. Lukyanov, A. A. AltynovScientific supervisors – Candidate of technical sciences of Division for Chemical Engineering M. V. KirginaLinguistic advisor – assistant of Division for Chemical Engineering I. A. BogdanovTomsk polytechnic university 634050, Tomsk, Lenina Avenue, 30, dml4@tpu.ruThe rational using of hydrocarbons recourses problem continues to be actual due to the growing share of hard-to-recover reserves, shifting of oil and gas production capacities to the northern latitudes and, as a result, the cost of hydrocarbons production increasing. Meanwhile, the last decade, despite the decline in 2022, is characterized by an increase in natural gas production.Stable gas condensate (SGC) is a by-product of natural gas processing process. SGC can be used to produce motor gasoline by processing it on a zeolite catalyst (zeoforming process). A distinctive feature of zeoforming is its profitability at low capacities (30 thousand tons/year) [1].Under the zeoforming process, conditions light hydrocarbons evaporated into the gas phase and re-acts with products formation on the catalyst’s sur-face.This work describes the influence of SGC con-tact time with the catalyst during zeoforming on the products composition and the depth of feedstock conversion.The processing of the SGC sample was car-ried out on a flow laboratory reactor equipped with a thermally insulated box with a heating element and a water-cooled separator at the outlet for the reaction products separation. The temperature was maintained by a heater at 400 °C and the pressure was maintained at 3.5 bar (abs.) with weak flow of nitrogen. The feedstock flow rate was controlled by a plunger pump. The set of experiments was carried out at feedstock flow rate of 0.33; 0.50; 0.67; 1.00; Table 1. Pour point of blendsBlends numberPP, °СConcentration of Add, c.u.0.0 0.5 0.7 1.0 1.5 2.0No. 1–15–39 –49 –54 –55 –55No. 2 –45 –45 –45 –52 –50No. 3 –40 –41 –42 –45 –46

The concentration of the depressor additive for diesel fuels as a factor of its effectiveness

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The concentration of the depressor additive for diesel fuels as a factor of its effectiveness

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